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-rw-r--r--contrib/btree_gist/btree_ts.c400
1 files changed, 400 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_ts.c b/contrib/btree_gist/btree_ts.c
new file mode 100644
index 0000000..a519009
--- /dev/null
+++ b/contrib/btree_gist/btree_ts.c
@@ -0,0 +1,400 @@
+/*
+ * contrib/btree_gist/btree_ts.c
+ */
+#include "postgres.h"
+
+#include <limits.h>
+
+#include "btree_gist.h"
+#include "btree_utils_num.h"
+#include "utils/builtins.h"
+#include "utils/datetime.h"
+#include "utils/float.h"
+
+typedef struct
+{
+ Timestamp lower;
+ Timestamp upper;
+} tsKEY;
+
+/*
+** timestamp ops
+*/
+PG_FUNCTION_INFO_V1(gbt_ts_compress);
+PG_FUNCTION_INFO_V1(gbt_tstz_compress);
+PG_FUNCTION_INFO_V1(gbt_ts_fetch);
+PG_FUNCTION_INFO_V1(gbt_ts_union);
+PG_FUNCTION_INFO_V1(gbt_ts_picksplit);
+PG_FUNCTION_INFO_V1(gbt_ts_consistent);
+PG_FUNCTION_INFO_V1(gbt_ts_distance);
+PG_FUNCTION_INFO_V1(gbt_tstz_consistent);
+PG_FUNCTION_INFO_V1(gbt_tstz_distance);
+PG_FUNCTION_INFO_V1(gbt_ts_penalty);
+PG_FUNCTION_INFO_V1(gbt_ts_same);
+
+
+#ifdef USE_FLOAT8_BYVAL
+#define TimestampGetDatumFast(X) TimestampGetDatum(X)
+#else
+#define TimestampGetDatumFast(X) PointerGetDatum(&(X))
+#endif
+
+
+static bool
+gbt_tsgt(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ const Timestamp *aa = (const Timestamp *) a;
+ const Timestamp *bb = (const Timestamp *) b;
+
+ return DatumGetBool(DirectFunctionCall2(timestamp_gt,
+ TimestampGetDatumFast(*aa),
+ TimestampGetDatumFast(*bb)));
+}
+
+static bool
+gbt_tsge(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ const Timestamp *aa = (const Timestamp *) a;
+ const Timestamp *bb = (const Timestamp *) b;
+
+ return DatumGetBool(DirectFunctionCall2(timestamp_ge,
+ TimestampGetDatumFast(*aa),
+ TimestampGetDatumFast(*bb)));
+}
+
+static bool
+gbt_tseq(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ const Timestamp *aa = (const Timestamp *) a;
+ const Timestamp *bb = (const Timestamp *) b;
+
+ return DatumGetBool(DirectFunctionCall2(timestamp_eq,
+ TimestampGetDatumFast(*aa),
+ TimestampGetDatumFast(*bb)));
+}
+
+static bool
+gbt_tsle(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ const Timestamp *aa = (const Timestamp *) a;
+ const Timestamp *bb = (const Timestamp *) b;
+
+ return DatumGetBool(DirectFunctionCall2(timestamp_le,
+ TimestampGetDatumFast(*aa),
+ TimestampGetDatumFast(*bb)));
+}
+
+static bool
+gbt_tslt(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ const Timestamp *aa = (const Timestamp *) a;
+ const Timestamp *bb = (const Timestamp *) b;
+
+ return DatumGetBool(DirectFunctionCall2(timestamp_lt,
+ TimestampGetDatumFast(*aa),
+ TimestampGetDatumFast(*bb)));
+}
+
+
+static int
+gbt_tskey_cmp(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ tsKEY *ia = (tsKEY *) (((const Nsrt *) a)->t);
+ tsKEY *ib = (tsKEY *) (((const Nsrt *) b)->t);
+ int res;
+
+ res = DatumGetInt32(DirectFunctionCall2(timestamp_cmp, TimestampGetDatumFast(ia->lower), TimestampGetDatumFast(ib->lower)));
+ if (res == 0)
+ return DatumGetInt32(DirectFunctionCall2(timestamp_cmp, TimestampGetDatumFast(ia->upper), TimestampGetDatumFast(ib->upper)));
+
+ return res;
+}
+
+static float8
+gbt_ts_dist(const void *a, const void *b, FmgrInfo *flinfo)
+{
+ const Timestamp *aa = (const Timestamp *) a;
+ const Timestamp *bb = (const Timestamp *) b;
+ Interval *i;
+
+ if (TIMESTAMP_NOT_FINITE(*aa) || TIMESTAMP_NOT_FINITE(*bb))
+ return get_float8_infinity();
+
+ i = DatumGetIntervalP(DirectFunctionCall2(timestamp_mi,
+ TimestampGetDatumFast(*aa),
+ TimestampGetDatumFast(*bb)));
+ return (float8) Abs(INTERVAL_TO_SEC(i));
+}
+
+
+static const gbtree_ninfo tinfo =
+{
+ gbt_t_ts,
+ sizeof(Timestamp),
+ 16, /* sizeof(gbtreekey16) */
+ gbt_tsgt,
+ gbt_tsge,
+ gbt_tseq,
+ gbt_tsle,
+ gbt_tslt,
+ gbt_tskey_cmp,
+ gbt_ts_dist
+};
+
+
+PG_FUNCTION_INFO_V1(ts_dist);
+Datum
+ts_dist(PG_FUNCTION_ARGS)
+{
+ Timestamp a = PG_GETARG_TIMESTAMP(0);
+ Timestamp b = PG_GETARG_TIMESTAMP(1);
+ Interval *r;
+
+ if (TIMESTAMP_NOT_FINITE(a) || TIMESTAMP_NOT_FINITE(b))
+ {
+ Interval *p = palloc(sizeof(Interval));
+
+ p->day = INT_MAX;
+ p->month = INT_MAX;
+ p->time = PG_INT64_MAX;
+ PG_RETURN_INTERVAL_P(p);
+ }
+ else
+ r = DatumGetIntervalP(DirectFunctionCall2(timestamp_mi,
+ PG_GETARG_DATUM(0),
+ PG_GETARG_DATUM(1)));
+ PG_RETURN_INTERVAL_P(abs_interval(r));
+}
+
+PG_FUNCTION_INFO_V1(tstz_dist);
+Datum
+tstz_dist(PG_FUNCTION_ARGS)
+{
+ TimestampTz a = PG_GETARG_TIMESTAMPTZ(0);
+ TimestampTz b = PG_GETARG_TIMESTAMPTZ(1);
+ Interval *r;
+
+ if (TIMESTAMP_NOT_FINITE(a) || TIMESTAMP_NOT_FINITE(b))
+ {
+ Interval *p = palloc(sizeof(Interval));
+
+ p->day = INT_MAX;
+ p->month = INT_MAX;
+ p->time = PG_INT64_MAX;
+ PG_RETURN_INTERVAL_P(p);
+ }
+
+ r = DatumGetIntervalP(DirectFunctionCall2(timestamp_mi,
+ PG_GETARG_DATUM(0),
+ PG_GETARG_DATUM(1)));
+ PG_RETURN_INTERVAL_P(abs_interval(r));
+}
+
+
+/**************************************************
+ * timestamp ops
+ **************************************************/
+
+
+static inline Timestamp
+tstz_to_ts_gmt(TimestampTz ts)
+{
+ /* No timezone correction is needed, since GMT is offset 0 by definition */
+ return (Timestamp) ts;
+}
+
+
+Datum
+gbt_ts_compress(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+
+ PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
+}
+
+
+Datum
+gbt_tstz_compress(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ GISTENTRY *retval;
+
+ if (entry->leafkey)
+ {
+ tsKEY *r = (tsKEY *) palloc(sizeof(tsKEY));
+ TimestampTz ts = DatumGetTimestampTz(entry->key);
+ Timestamp gmt;
+
+ gmt = tstz_to_ts_gmt(ts);
+
+ retval = palloc(sizeof(GISTENTRY));
+ r->lower = r->upper = gmt;
+ gistentryinit(*retval, PointerGetDatum(r),
+ entry->rel, entry->page,
+ entry->offset, false);
+ }
+ else
+ retval = entry;
+
+ PG_RETURN_POINTER(retval);
+}
+
+Datum
+gbt_ts_fetch(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+
+ PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
+}
+
+Datum
+gbt_ts_consistent(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ Timestamp query = PG_GETARG_TIMESTAMP(1);
+ StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
+
+ /* Oid subtype = PG_GETARG_OID(3); */
+ bool *recheck = (bool *) PG_GETARG_POINTER(4);
+ tsKEY *kkk = (tsKEY *) DatumGetPointer(entry->key);
+ GBT_NUMKEY_R key;
+
+ /* All cases served by this function are exact */
+ *recheck = false;
+
+ key.lower = (GBT_NUMKEY *) &kkk->lower;
+ key.upper = (GBT_NUMKEY *) &kkk->upper;
+
+ PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) &query, &strategy,
+ GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
+}
+
+Datum
+gbt_ts_distance(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ Timestamp query = PG_GETARG_TIMESTAMP(1);
+
+ /* Oid subtype = PG_GETARG_OID(3); */
+ tsKEY *kkk = (tsKEY *) DatumGetPointer(entry->key);
+ GBT_NUMKEY_R key;
+
+ key.lower = (GBT_NUMKEY *) &kkk->lower;
+ key.upper = (GBT_NUMKEY *) &kkk->upper;
+
+ PG_RETURN_FLOAT8(gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry),
+ &tinfo, fcinfo->flinfo));
+}
+
+Datum
+gbt_tstz_consistent(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ TimestampTz query = PG_GETARG_TIMESTAMPTZ(1);
+ StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
+
+ /* Oid subtype = PG_GETARG_OID(3); */
+ bool *recheck = (bool *) PG_GETARG_POINTER(4);
+ char *kkk = (char *) DatumGetPointer(entry->key);
+ GBT_NUMKEY_R key;
+ Timestamp qqq;
+
+ /* All cases served by this function are exact */
+ *recheck = false;
+
+ key.lower = (GBT_NUMKEY *) &kkk[0];
+ key.upper = (GBT_NUMKEY *) &kkk[MAXALIGN(tinfo.size)];
+ qqq = tstz_to_ts_gmt(query);
+
+ PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) &qqq, &strategy,
+ GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
+}
+
+Datum
+gbt_tstz_distance(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ TimestampTz query = PG_GETARG_TIMESTAMPTZ(1);
+
+ /* Oid subtype = PG_GETARG_OID(3); */
+ char *kkk = (char *) DatumGetPointer(entry->key);
+ GBT_NUMKEY_R key;
+ Timestamp qqq;
+
+ key.lower = (GBT_NUMKEY *) &kkk[0];
+ key.upper = (GBT_NUMKEY *) &kkk[MAXALIGN(tinfo.size)];
+ qqq = tstz_to_ts_gmt(query);
+
+ PG_RETURN_FLOAT8(gbt_num_distance(&key, (void *) &qqq, GIST_LEAF(entry),
+ &tinfo, fcinfo->flinfo));
+}
+
+
+Datum
+gbt_ts_union(PG_FUNCTION_ARGS)
+{
+ GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
+ void *out = palloc(sizeof(tsKEY));
+
+ *(int *) PG_GETARG_POINTER(1) = sizeof(tsKEY);
+ PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo));
+}
+
+
+#define penalty_check_max_float(val) \
+ do { \
+ if ( val > FLT_MAX ) \
+ val = FLT_MAX; \
+ if ( val < -FLT_MAX ) \
+ val = -FLT_MAX; \
+ } while (0)
+
+
+Datum
+gbt_ts_penalty(PG_FUNCTION_ARGS)
+{
+ tsKEY *origentry = (tsKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
+ tsKEY *newentry = (tsKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
+ float *result = (float *) PG_GETARG_POINTER(2);
+
+ double orgdbl[2],
+ newdbl[2];
+
+ /*
+ * We are always using "double" timestamps here. Precision should be good
+ * enough.
+ */
+ orgdbl[0] = ((double) origentry->lower);
+ orgdbl[1] = ((double) origentry->upper);
+ newdbl[0] = ((double) newentry->lower);
+ newdbl[1] = ((double) newentry->upper);
+
+ penalty_check_max_float(orgdbl[0]);
+ penalty_check_max_float(orgdbl[1]);
+ penalty_check_max_float(newdbl[0]);
+ penalty_check_max_float(newdbl[1]);
+
+ penalty_num(result, orgdbl[0], orgdbl[1], newdbl[0], newdbl[1]);
+
+ PG_RETURN_POINTER(result);
+}
+
+
+Datum
+gbt_ts_picksplit(PG_FUNCTION_ARGS)
+{
+ PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
+ (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
+ &tinfo, fcinfo->flinfo));
+}
+
+Datum
+gbt_ts_same(PG_FUNCTION_ARGS)
+{
+ tsKEY *b1 = (tsKEY *) PG_GETARG_POINTER(0);
+ tsKEY *b2 = (tsKEY *) PG_GETARG_POINTER(1);
+ bool *result = (bool *) PG_GETARG_POINTER(2);
+
+ *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
+ PG_RETURN_POINTER(result);
+}
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